Casing-head fob wells



F. J. MOSER.

CASENG HEAD FOR WELLS.

APPUCATION FILED lUNE 23, NUS.

1 ,1 94,863. PatentedAug 15, 1916.

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FRED JOSEPH MOSER, OF KANE, PENNSYLVANIA.

CASING-HEAD FOR WELLS.-

Specification of Letters Patent.

Patented Aug. 15, 1916.

Application filed June 23, 1916. Serial No. 105,385.

To all whom it may concern:

Be it known that I, FRED J. Mosnu, a citizen of the United States, residing at Kane, in the county of McKean and State of Pennsylvania, have invented new and useful Improvements in Casing-Heads for WVells, of which the following is a specification.

This invention relates to casing heads for wells and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out in the claims.

The object of the invention is to provide a head from which the tubing may be readily suspended and into which the tubing with its supporting top may be readily introduced.

The invention is illustrated in the accompanying drawings as follows Figure 1 shows a side elevation of the top of a well with the pump connection. Fig. 2 a central section of the casing head. Fig. 3 a. side elevation of the casing head top.

1 marks the casing, 2 the casing head and 3 the top.

The casing head has an annular groove 4:, the bottom of which forms a seat for the top. The top has a seating plate 5 which is adapted to rest on the seat formed in the groove 4. It will be observed that this seat is as large as the casing and preferably approximately the full diameter of the casing head. An extension 6 projects downwardly from the plate 5 and this is nearly the size of the opening through the casing head. A tapered portion 7 extends from the part 6 and a tubing connection 8 is arranged below the tapered portion 7. A tubing 9 is screwed into the connection 8.

A T 10 is preferably formed integral with the top above the plate 5 and the stufiing box 11 is arranged above this. The polished rod 12 operates through the gland and operates the pump (not shown) in the usual manner. The polished rod is pivotally con nected at 14: with a walking beam 13, the walking beam being pivoted on a post at It will be understood that as the walking beam oscillates it gives to the pivot 14: a curved path with the pivot 15 as a center. The pumping load on the polished rod is very great and the tendency is to rock the top of the casing head and thus put strain on the tubing supports. In this device the plate 5 forms large seat or bearing for the tubing support and the extension below the plate forms a lever which with the weight of the tubing hanging from the connection 8 practically eliminates the effect of the swaying of the polished rod on the tubing support and consequently any undue strain on the tubing connection at 8.

here a large top such as 5 is used and is connected with the tubing it introduces a difficulty when the tubing is lowered in place. If one side of the top 5 should engage a. portion of the casing head, thus putting all the weight of the tubing on one side of the top the cooking action thus produced would be apt to break the joint between the tubing and the top. This is to some extent obviated by the extension heretofore described but as an additional element of safety I have provided the beveled surface 7 which guides the top into the casing head and prevents the catching of the top at its outer edge upon one side only because when the plate 5 reaches the groove 4: it has already been centered by the beveled portion 7 and consequently must pass to its seat at the bottom of the groove 4L without engaging at one side prior to its engagement at the other.

I prefer to provide the set screws 5 which extend over the rib formed at the edge of the top, also to have the vertical opening through the head approximately the diam eter of the well casing. This would include some variation particularly in the direction of larger openings as one size of head is used for different casings. A seat as large as the casing gives the proper support and an opening of this size permits the introduction of the tools.

What I claim as new is 1. In combination with a casing for a well and a casing head having a vertical opening approximating the diameter of the well casing and an annular seat thereon forming a tubing support, of a top for the head having an annular plate resting on the seat; and a downward extension below the plate having a tubular connection at its lower end.

2. In combination with a casing for a well and a casing head having a vertical opening approximating the diameter of the Well casing and an annular seat thereon forming a tubing support, of a top for the head having an annular plate resting on the seat; a downward extension below the plate having a tubing connection at its lower end; and a beveled guiding portion between the connection for the tubing and the plate.

3. In combination with a casing for a well and a casing head having a vertical opening approximating the diameter of the well casing and an annular seat thereon forming a tubing support, of a top for the head having an annular plate resting on the seat; a downward extension below the plate having a tubing connection at its lower end; and a T formed with and above the plate.

4. In combination with a casing for a well and a casing head having a vertical opening approximating the diameter of the well casing and a seat thereon surrounded by an annular shoulder, of a top for the head having an annular plate resting on the seat;

and a downward extension below the plate having a tubing connection at its lower end.

5. In combination with a casing head for a well, of a top for the head having an annular plate forming a support; means of attachment with a tubing at the lower end; and a beveled guiding portion between the plate and means of attachment with the tubing.

6. A top for a casing head for a Well having an annular plate adapted to form a support; an extension below the plate with a tubing connection at its lower end; and a beveled guiding portion between the plate and the tubing connection.

In testimony whereof I have hereunto set my hand.

FRED JOSEPH MOSER.

Copies 01' this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

